| 摘要 |
<p>Compositions comprising at least one N?α, Nφ¿-dialkyl aminomethylenephosphonic acid having formula (I) or N-oxide thereof having formula (II) or formula (III) wherein R is an alkylene group having from 2 to 6 carbon atoms; R¿1? and R2 are each independently an alkyl group having from 1 to 6, preferably 1 to 4, carbon atoms, a hydroxyalkyl group having alkyl of from 1 to 6, preferably 1 to 4, carbon atoms, or carboxyalkyl group having alkyl of from 1 to 6, preferably from 1 to 4, carbon atoms; M is, independently in each occurrence, selected from the group consisting of H, NH4, amine, alkali metal, alkaline earth metal, or a linear or branched alkyl group having from 1 to 4 carbon atoms; and n is an integer from 1 to 6; are surprisingly found to have superior performance in peroxide bleaching of cellulosic materials, corrosion and scale inhibition or scale removal in water treatment and oil field applications, detergent applications, and chelation of metal ions.</p> |
